Screwdriver shaft

Details Screwdriver shaft Screwdriver shaft

1994-09-19

1996-07-23

Hyder, Philip S.

Tools and hardware

Other tools and implements

Screwdriver type

D24133, D24145, D24146, D24147

Patent

active

D03719472

REFERENCES:
patent: D273556 (1984-04-01), Henry
patent: D311483 (1990-10-01), Espin
patent: D312034 (1990-11-01), Espin
patent: 2193477 (1940-03-01), DeVellier
patent: 3424212 (1969-01-01), Kemper
patent: 3842875 (1974-10-01), Tascone
patent: 3985170 (1976-10-01), Iskra
patent: 4191228 (1980-03-01), Fenton
patent: 5013316 (1991-05-01), Goble et al.
patent: 5237893 (1993-08-01), Ryder et al.
patent: 5364400 (1994-11-01), Rego, Jr. et al.

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